Piston-ring remover



Feb. 13, 1923.

V. A. NELSON.

PISTON RING REMOVER.

FILED OCT. 6.192I. l

Patented Feb. i3, i923.

nieren-nine' nnirovnn.

Application :tiled @stehe-r 6, 1921. Serial No, 505,875.

To all/wkomz' may concern: l Y

Be it known that l, Vieron A, InLsoN, a citizen'of the United States,and a resident of the city of Portland, county of Multnomah, and Stateci Oregon, have invented a certain new and useful Improvement in Fiston-Ring Removers, of whichv the 'following is J. speciiication.

'This invention relates to piston ring removers ot the type shown in the.patent 'to Charles O. Hammontree and myself, dated April 20, 1920, No.1,337,600, which vis adapted to be used on a variety of diii'erentpiston rings.

The deiiciency which l experienced in the tool described by said patentis, that devices, or so called jaws, of the tool which function toengage lthe ends of the piston rings, so that the ends may be spread,would have to be oi'c' a form corresponding tothe said ends; and inconsequence at least 'two tools would be required-one for oblique endsanother for square ends, which forms represent the standard types ofpiston rings at present in use. a D

The primary object of my invention is to provide a tool which is adaptedto lbe used on either of said standard types of lpiston rings. 0

Another object of my invention 1s to provide a tool which is inexpensiveto manufacture, in that it has but few parts, kand the pieces may7 bestamped out of sheet metal.

The construction and use of my improved tool are shown in theaccompanying drawings, in which:

Fig. l is a side view with the remover partially opening a piston ringand indicates the action when the ring is fully opened;

Fig. 2 is a cross sectional view of Fig. l on the line 2 2; j

Fig. 3 is a bottom view of my tool;

Figs. 4, 5 and 6 are views showing the application of my tool to thedie'rent standard designs of piston rings;

Fig. 7 shows a sectional detail of construction' Fig` 8 is a perspectiveview oi the fixed jaw 7L;

Fig. 9 is a cross sectional view on the same line as Fig. 7 and showsthe relation oi' the dierent parts to each other; and

Fig. 10 is a perspective view of the removable jaw.

In Figs. 4f, 5 and 6 are shown the Ldifferent standard types of pistonrings to which l j leavin 0" a referred. Note that the piston ringsshown in Figs. i and 5 lhave obliqueends, while the piston ring shown inFig. has square ends, that is each end has a rectangular jog G -gprojecting lip; the lips of the two ends sliding by each other. l. havedesigned this ytool so that it `will open all ci the standardrings withthe same jaw. i do this by placing they projecting lingers ft2 and e2 e5slightly below the longitudinal center line of the body d. This allowsthe {inger- LZ to slip by the projecting lip in Fig. 6 and to seatfirmly against the rectangular jog y as shown in the same figure. Thisfeature will n'ot interfere with the proper operating ot oblique endrings as the lips lil and al prevent transverse movement.' l

Another bigadvantage of my present invention is that it can bemanufactured very cheaply. All of the parts are made from sheet metaland can be stamped and formed by simple machinery and the onlyassembling will be to drive one rivet. This will enable to compete in`price with other similar products.

The movable jaw ai is connected to the handle 7) by means of the rivet cand this whole assembly is movably connected to the body d. The body Zis made up of a handle e, a slot f, an oitset g, a fixed jaw It composedof side lips tl, and a finger 7a2, all of which are stamped from asingle piece of material.

The movable jaw a is also constructed with side lips al, and aprojecting finger a2. The handle b is made with a depression whichis asdeep as the thickness of the body d, as shown in F ig. 9, and thuseliminates the necessity or a separate guide plate. The off-set g bringsthe movable jaw to a position in the same plane as the fixed jaw 71,.

The operation of this piston ring remover is approximately the same asthe type shown y in the patent issued to Charles O. Hammon- Y tree andmyseli' dated April`20, 1920,'Number 1,337,600. lt is roughly asfollows:

When an operator desires to remove a piston ring from its seat on thepistnor desires to insert a ring in position on the piston he adjuststhe tool so that the fingers a2 and h2 are pressed against each other.These lingers kcan then be inserted in the gap 'bietween the ends of theringl and the side flanges o, and Z9; then slip on either side of ringto prevent transverse movement. The handles 110 e and are then drawntogether and the ring is then expanded and can be slipped over theehonldef of the piston and the. ring will resnnle its onlginol shape andthe tool can be leleased as' soon as the contracting' pressure on thehandles is removed. f

l claim:

l. ln aY toolv for removing piston rings 'W'o connected members one ofwhich is relatively slidable lengthwise on LUne oli-her, each lnelfnbel`benul@` pl'ovided with a jew for engaging onel of the piston ring,and'eeoh mw @ennuie-lng parallel spaced langes and pin-like shoulderlocated between sind nges banning one end o'" ne channel benges.

described in dann l dsnt die said 'pin-like Shoulders 'th/enel! otherend loopted nem-e1' one side olf the jaw channels for Jche purposespec'e'd.

` 8. A tool for removing piston rings oompl'lsng o body-piece having :Llongitudinally extending slolI out outntellnediote its ends7 a Companionpiece seated on the body piece, having a, portion thereof pressed out toonn nn (along-Med lug adapted to bear in seid slot7 and e jalw e-lixedon seid lngon the under sdefof'the bodypeoe7 thereby sldably connectingthe seid pieces, the comprising parallel spaced flanges and ni'pn-lkeshoulderloceted between said'ilenges: and barring one end lof thechannel between the letter, lle body piece-being p'ovded with a jew also'Comprising parallely spaced lzlnges and e pin-like shonldel looatedtl'le-re-between bom-ing one vend of the channelbetWeen-the L" flanges,and both pieces being proyded'Wt-h handles. y

VCTR A. NELSON.

